Looked at the Taco but I have a set of plans for Incoll's Hornet Wasp that I scaled down to 36" span and is just about perfect for a .15 to .25. I like the looks of that better. Think the wing area is around 450 sq in. Perhaps add a bit more fuse area like the Super Hornet Wasp for better knife edge. Hard to beat the Wasp design for performance & ease of building.
PilotFrog